#ifndef LIBRARY_DATA_H
#define LIBRARY_DATA_H
#include"Classbook.h"
#include"User.h"
using namespace std;

namespace LB
{
	class Library_data
	{
	public:
		virtual void loadbook(vector<Classbook> &v_classbooks) = 0;
		virtual void savebook(vector<Classbook> &v_classbooks) = 0;
		virtual void loadusers(vector<User> &v_users) = 0;
		virtual void saveusers(vector<User> &v_users) = 0;


	};
}

#endif